25 Pa. Stat. § 3527
If any person shall prevent or attempt to prevent any election officers from holding any primary or election, under the provisions of this act, or shall use or threaten any violence to any such officer; or shall interrupt or improperly interfere with him in the execution of his duty; or shall block up or attempt to block up the avenue to the door of any polling place; or shall use or practice any intimidation, threats, force or violence with design to influence unduly or overawe any elector, or to prevent him from voting or restrain his freedom of choice; or shall prepare or present to any election officer a fraudulent voter's certificate not signed in the polling place by the elector whose certificate it purports to be; or shall deposit fraudulent ballots in the ballot box; or shall register fraudulent votes upon any voting machine; or shall tamper with any district register, voting check list, numbered lists of voters, ballot box or voting machine; or shall conspire with others to commit any of the offenses herein mentioned, or in any manner to prevent a free and fair primary or election, he shall be guilty of a felony of the third degree, and, upon conviction thereof, shall be sentenced to pay a fine not exceeding fifteen thousand ($15,000) dollars, or to undergo an imprisonment of not more than seven (7) years, or both, in the discretion of the court.
25 P.S.§ 3527